require 'rake/testtask'

# # Helpers #

def command?(util)

Rake::Task[:load_path].invoke
context = Object.new
require 'uri'
require 'hub/context'
context.extend Hub::Context
context.send(:command?, util)

end

task :load_path do

$LOAD_PATH.unshift File.expand_path('../lib', __FILE__)

end

task :check_dirty do

unless system 'git', 'diff', '--quiet', 'HEAD'
  abort "Aborted: you have uncommitted changes"
end

end

# # Tests #

task :default => [:test, :features]

Rake::TestTask.new do |t|

t.libs << 'test'
t.pattern = 'test   /*_test.rb'

end

task :features do

sh 'RUBYLIB=lib cucumber -f progress -t ~@wip features'

end

# # Manual #

if command? :ronn

desc "Show man page"
task :man => "man:build" do
  exec "man man/hub.1"
end

desc "Build man pages"
task "man:build" => ["man/hub.1", "man/hub.1.html"]

extract_examples = lambda { |readme_file|
  # split readme in sections
  examples = File.read(readme_file).split(/^-{4,}$/)[3].strip
  examples.sub!(/^.+?(###)/, '\1')  # strip intro paragraph
  examples.sub!(/\n+.+\Z/, '')       # remove last line
  examples
}

# inject examples from README file to .ronn source
source_with_examples = lambda { |source, readme|
  examples = extract_examples.call(readme)
  compiled = File.read(source)
  compiled.sub!('{{README}}', examples)
  compiled
}

# generate man page with ronn
compile_ronn = lambda { |destination, type, contents|
  File.popen("ronn --pipe --#{type} --organization=GITHUB --manual='Hub Manual'", 'w+') { |io|
    io.write contents
    io.close_write
    File.open(destination, 'w') { |f| f << io.read }
  }
  abort "ronn --#{type} conversion failed" unless $?.success?
}

file "man/hub.1" => ["man/hub.1.ronn", "README.md"] do |task|
  contents = source_with_examples.call(*task.prerequisites)
  compile_ronn.call(task.name, 'roff', contents)
  compile_ronn.call("#{task.name}.html", 'html', contents)
end

file "man/hub.1.html" => ["man/hub.1.ronn", "README.md"] do |task|
  Rake::Task["man/hub.1"].invoke
end

end

# # Build #

file “hub” => FileList.new(“lib/hub.rb”, “lib/hub/*.rb”, “man/hub.1”) do |task|

Rake::Task[:load_path].invoke
require 'hub/version'
require 'hub/standalone'
Hub::Standalone.save(task.name)

end

desc “Build standalone script” task :standalone => “hub”

desc %{Install standalone script and man page. On Unix-based OS, installs into PREFIX (default: `/usr/local`). On Windows, installs into Ruby's main bin directory.} task :install => “hub” do

require 'rbconfig'
if RbConfig::CONFIG['host_os'] =~ /mswin|mingw/
  bindir = RbConfig::CONFIG['bindir']
  File.open(File.join(bindir, 'hub.bat'), 'w') { |f| f.write('@"ruby.exe" "%~dpn0" %*') }
  FileUtils.cp 'hub', bindir
else
  prefix = ENV['PREFIX'] || ENV['prefix'] || '/usr/local'
  prefix = File.join(ENV["DESTDIR"], prefix) if ENV["DESTDIR"]

  FileUtils.mkdir_p "#{prefix}/bin"
  FileUtils.cp "hub", "#{prefix}/bin", :preserve => true

  FileUtils.mkdir_p "#{prefix}/share/man/man1"
  FileUtils.cp "man/hub.1", "#{prefix}/share/man/man1"
end

end

# # Release #

task :release => [:pages, :gem_release, :homebrew]

desc “Copy files to gh-pages branch, but don't publish” task :gh_pages => [:check_dirty, “hub”, “man/hub.1.html”] do

cp "man/hub.1.html", "html"
sh "git checkout gh-pages"
# replace the specific shebang with a generic ruby one
sh "echo '#!/usr/bin/env' ruby > standalone"
sh "sed 1d hub >> standalone"
mv "html", "hub.1.html"
sh "git add standalone hub.1.html"
sh "git commit -m 'update standalone'"

end

desc “Publish to GitHub Pages” task :pages => :gh_pages do

sh "git push origin gh-pages"
sh "git checkout master"
puts "Done."

end

task :gem_release do

sh "gem release -t"

end

desc “Publish to Homebrew” task :homebrew do

require File.expand_path('../lib/hub/version', __FILE__)
ENV['RUBYOPT'] = ''
Dir.chdir %xbrew --prefix`.chomp do
  sh 'git checkout -q master'
  sh 'git pull -q origin master'

  formula_file = 'Library/Formula/hub.rb'
  sha = %xcurl -fsSL https://github.com/github/hub/archive/v#{Hub::VERSION}.tar.gz | shasum`.split(/\s+/).first
  abort unless $?.success? and sha.length == 40

  formula = File.read formula_file
  formula.sub!(/\bv\d+(\.\d+)  , "v#{Hub::VERSION}")
  formula.sub!(/\b[0-9a-f]{40}\b/, sha)
  File.open(formula_file, 'w') {|f| f << formula }

  branch = "hub-v#{Hub::VERSION}"
  sh "git checkout -q -B #{branch}"
  sh "git commit -m 'hub #{Hub::VERSION}' -- #{formula_file}"
  sh "git push -u mislav #{branch}"
  sh "hub pull-request -m 'hub #{Hub::VERSION}'"

  sh "git checkout -q master"
end

end